The O-Ring, cataloged under National Stock Number 5331-00-451-0493, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Freudenberg-Nok General Partnership. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Freudenberg-Nok General Partnership (CAGE 05262); Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001) |
| Parameter | Value |
|---|---|
| NSN | 5331-00-451-0493 |
| Primary Part Number | ARP340-9250 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Freudenberg-Nok General Partnership |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ARP340-9250 PRIMARY | Freudenberg-Nok General Partnership (USA) |
| 2532499-340 | Freudenberg-Nok General Partnership (USA) |
| 2532499-340 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 2532499-340 | 5/9 Secondary reference Develco Inc |
NSN 5331-00-451-0493 is a O-Ring, manufactured by Freudenberg-Nok General Partnership, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-451-0493 has 3 manufacturer part numbers on file: ARP340-9250 (Freudenberg-Nok General Partnership), 2532499-340 (Freudenberg-Nok General Partnership), 2532499-340 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.